Only include first level list elements in sortable
Only include first level list elements in sortable

If an li in a sortable's ul contains li elements within, sortable tries to sort the parent li (or a different li entirely) within the child li. Fixes bug by only looking one level down for li elements.
framework7io/Framework7,mgesmundo/Framework7,framework7io/Framework7,AdrianV/Framework7,mgesmundo/Framework7,iamxiaoma/Framework7,AdrianV/Framework7,dingxin/Framework7,dingxin/Framework7,AdrianV/Framework7,nolimits4web/Framework7,iamxiaoma/Framework7,iamxiaoma/Framework7,mgesmundo/Framework7,iamxiaoma/Framework7,nolimits4web/Framework7,nolimits4web/Framework7